Journal
CHEMICAL ENGINEERING RESEARCH & DESIGN
Volume 119, Issue -, Pages 101-116Publisher
INST CHEMICAL ENGINEERS
DOI: 10.1016/j.cherd.2017.01.007
Keywords
Anaerobic digester; Energy requirement; Heat loss; Heat transfer; Simulation; Thermal modeling
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Funding
- National Agency for Research through the Autoferm project [ANR-BIME 0007]
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A transient thermal model has been developed for predicting temperature variations in semi-buried anaerobic digesters as a function of climatic conditions (ambient temperature, solar irradiation, rain intensity, etc.). Compared to literature, the modeling of several heat transfer terms was improved. Predicted operating temperatures were in good agreement with experimental observations. The simulation results allowed identifying phenomena leading to major energy losses from the reactor. Technical solutions were recommended to reduce heat losses in anaerobic digesters. The present model constitutes a powerful predictive tool for assisting engineers in determining the optimal design of digesters, as well as in the investigation of the influence of materials type on the reactor heating requirements. (C) 2017 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
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